ES2273912T3 - METHOD FOR WASHING DISHES. - Google Patents

Abstract

A method for washing dishes / tableware in a dishwasher, the method comprising the simultaneous or sequential release of quantities of a dishwasher product in the form of particles or in the form of densified particles and an anhydrous detergent auxiliary substance for dishwashing in the form of liquid, gel or paste, contained in separate compartments of a water-soluble multicompartmental bag in the same or in different cycles of the dishwasher, wherein the particulate dishwasher product comprises a detergent bleach and the detergent auxiliary substance comprises a humectant at sufficient levels to act as a moisture collector to stabilize the active substance moisture sensitive detergent, wherein the humectant is selected from non-aqueous hydrophilic organic solvents, including glycols and polyhydric alcohols, and where the compartment comprising the auxiliary detergent substance is situated above the compartment comprising the detergent bleach.

Description

Method for washing dishes.

Technical field

The present invention is in the field of dishwashing, in particular refers to methods for dishwashing including methods for washing the tableware / tableware in a dishwasher using products for washing dishes in the form of a multi-compartment bag. The methods of the invention provide excellent results of cleaning.

Background of the invention

It has been observed that unit doses of dishwashing detergents are more attractive and comfortable for some consumers because they avoid the need for the consumer to measure the product, thus creating a more precise dosage and avoiding waste of overdosing or insufficient dosage. For this reason, dishwashing detergent products in form Pill have become very popular. Detergent products in Bag shape are also known in the art.

The use of bleach in formulations is known of dishwashing detergent in order to remove stains, especially tea stains, coffee, fruit juice and carotenoids Chlorinated and peroxygenated bleaching agents are Effective to remove stains. Although the chlorinated bleaching agent It is a very effective cleaning agent, it is not compatible with various detergent ingredients and may require additional processing to be incorporated into a final product. Bleachers peroxygenates, on the other hand, are more compatible with ingredients conventional detergents However, one of the problems that found when formulating detergent compositions for washing dishes containing peroxygen is the fact that the bleach it is prone to decompose in contact with moisture, reducing thus the amount of active bleaching substance available to the dishwashing process. Once the process of decomposition, in addition, the decomposition is selfcatalyzed due to the presence of free radicals generated by the process of decomposition. Bleach Decomposition Products they can also oxidize detergency enzymes, thus reducing the amount of enzymes available for the washing process of crockery

In the case of flexible unit doses such as bags, pills or sachets that are permeable to the moisture, bleach decomposition leads to a problem additional due to the generation of gaseous oxygen. Normally the Bag-shaped material is not oxygen permeable and this can cause swelling or even destruction of the bag and a detrimental effect on appearance and adaptation to dispenser.

Some detergent components used in detergent compositions for dishwashing are liquids It may be difficult or expensive to include these ingredients liquids in a solid detergent composition. Thus, certain ingredients are preferably transported and supply detergent manufacturers in liquid form, requiring additional and sometimes expensive processing steps to be able to include them in a solid detergent composition. A Examples of these detergent ingredients are surfactants, especially nonionic surfactants that are typically liquids at room temperature or are typically transported and they supply in liquid form to the manufacturers of detergents. Other example are organic solvents.

Current methods to incorporate liquid ingredients in solid detergent compositions include the absorption of the liquid ingredient in a solid vehicle, for example, by mixing, agglomeration or spraying techniques. Typically, solid detergent compositions comprise only small amounts of these liquid detergent ingredients due to the difficulty and cost of incorporating these ingredients liquids in a solid detergent. The problems are especially serious in the case of solid compositions that are subject to a densification stage and especially at the levels of densification applied in the manufacture of tablets for dishwasher. In addition, the incorporation of liquid ingredients in solid detergent compositions may affect the dissolution characteristics of the composition (for example, as consequence of the formation of gel phases of the surfactant) and They can also cause fluency problems. It would be advantageous have a detergent composition that would allow different ingredients being in their natural state, that is, liquid or solid This would facilitate the manufacturing process and It would also allow the release of liquid ingredients before or after the release of solid ingredients. For example, the differential dissolution of the active ingredients would be beneficial in the case of enzyme / bleach compositions for avoid oxidation of enzymes by bleach in solution for dishwashing. It would also be advantageous to separate the perfume bleach.

The patent US-A-4,115,292 is directed to a detergent article for use in a dishwasher, comprising an enzyme included in an interior vehicle in the form of a film water soluble, combined with detergent, and included in a package exterior in the form of water-soluble film.

The patent EP-A-132,726 is addressed to a multi-compartment detergent package comprising a container interior combined with detergent and included in an outer container. The packaging material of the outer container is permeable to water and The packaging material of the inner container is water soluble.

An objective of the present invention is provide dishwashing methods and products that confer improved cleaning capacity and product stability. Other goal is to provide dishes washing products and methods that have a simplified processing, that take into account the product incompatibility problems and that are capable of provide a differential dissolution of the components assets.

Summary of the invention

According to a first aspect of the present invention, a method for washing dishes / articles of table in a dishwasher, the release method comprising simultaneous or sequential quantities of a product to dishwasher in the form of particles or in the form of particles densified and an anhydrous detergent auxiliary substance for the dishwashing in the form of liquid, gel or paste, contained in separate compartments of a multi-compartment bag water soluble in the same or in different cycles of the dishwasher, in where the particulate product for dishwashers comprises a detergent bleach and detergent auxiliary substance comprises a humectant at levels sufficient to act as moisture collector to stabilize the detergent active substance moisture sensitive, where the humectant is selected from non-aqueous hydrophilic organic solvents, including glycols and polyhydric alcohols, and where the compartment comprising the detergent auxiliary substance is located above the compartment which comprises the detergent bleach.

Multi-compartment bags (term that includes pills, sachets and other compartmentalized containers of unit dose) suitable for use in the present invention are water soluble bags. Of preferred use in the present invention are water-soluble bags based on poly (acetate vinyl) / poly (vinyl alcohol) partially hydrolyzed as bag-shaped material. Although they are water soluble, you are Bags have the disadvantage that they are permeable to moisture.

The term anhydrous herein is intended to include compositions that contain less than approximately 10% water by weight of the composition, preferably less than about 5% water and more preferably less than about 1%. Water can be present in the form of hydrated compounds, that is, bound water or in the form of moisture. It is preferred that the composition contain less than about 1%, preferably less than approximately 0.1% free moisture. Free moisture can be measure by extracting 2 g of the product in 50 ml of dry methanol at room temperature for 20 minutes and then analyzed 1 ml of methanol aliquot by volumetric Karl titration Fischer The term water soluble, as used to describe the bag, means that the bag or a compartment of it is dissolves or disperses in water to release some or all of the contents thereof at a temperature or temperature range in the normal operating range of a washing machine dinnerware (from room temperature to 70ºC). Under other temperatures or conditions of use, however, the bag or compartment of the it can be insoluble in water and remain intact for prolonged periods of time, superior to those of the regime of normal operation of the machine for washing dishes.

In a preferred embodiment the product in Particle shape for dishwashing is densified. The densification can be achieved by compaction, compression, pounding, tamping, vibration, exposure to inert forces, etc., densification being carried out preferably so that get an increase in bulk density of at least about 10%, preferably at least about 20% and more preferably at least about 30%. The density Final apparent is preferably at least about 0.6 g / cc, more preferably at least about 0.8 g / cc, especially at least about 1 g / cc and more especially at least approximately 1.3 g / cc.

In a preferred embodiment, the product densified in the form of particles for dishwashing is in shape of a pill The multi-compartment bags that they comprise a tablet and an anhydrous liquid, gel or paste have the known advantages of the pills, such as high density of the product, minimum storage volume requirements and effective conditioning, but also allow release simultaneous or sequential of a liquid, gel or paste in quantities that would be impossible to achieve through manufacturing techniques of normal pills One more advantage of such bags is that the user does not touch or come into direct contact with the tablet and the remaining dishwasher composition.

From the point of view of manufacturing, the multi-compartment bags comprising a product for Dishwasher shaped particles in the form of a pill are very suitable because filling the bags with product in the form of particles can be a complex and prone process inaccuracies It is often slow and tends to produce dust, so it can be very difficult to avoid the deposition of dust on the joint area of the bag. This can be harmful for Get a strong seal.

The tablet can be formed using any suitable method, but preferably by compression, by example, in a tablet press. Preferably, the tablet is a compressed body prepared by mixing the components of the dishwashing detergent, followed by the application of a compression pressure of at least about 3.9 MPa (40 kg / cm2), preferably at least about 24.5 MPa (250 kg / cm2), more preferably at least approximately 34.3 MPa (350 kg / cm2 [3.43 kN / cm2]), still more preferably about 39.2 MPa (400 kg / cm2) at approximately 196.1 MPa (2000 kg / cm2) and especially of approximately 58.8 MPa (600 kg / cm2) to approximately 117.7 MPa (1200 kg / cm2) (the compression pressure herein memory is the force applied divided by the section area transverse of the tablet in a plane transverse to the force applied [specifically, the cross-sectional area of the matrix of the rotary press]). From the point of view of providing optimum integrity and strength of the tablet (measured by example by a child's Bite Resistance test [CBS]) and the dissolution characteristics of the product, in the In the present invention said tablets are preferred. Pills preferably they have a CBS of at least about 6 kg, preferably greater than about 8 kg, more preferably greater than about 10 kg, especially greater than approximately 12 kg, and more especially greater than approximately 14 kg, the CBS is measured according to the Test Specification of the US Consumer Products Safety Commission

The tablet can take several forms geometric, such as spheres, cubes, etc., but preferably It has a generally axially symmetrical shape with a section Transversal generally round, square or rectangular.

The tablet can be prepared in such a way that This comprises at least one mold on its surface. The mold or molds they can also have a variable size and shape in their location, orientation and topology related to the tablet. For example, him mold or molds can generally have a cross section circular, square or oval; these can form a cavity internally closed, depression or cavity on the surface of the tablet, or they can extend between unconnected regions of the surface of the tablet (for example opposite surfaces axially) forming one or more "holes" in the tablet; Y these may be otherwise symmetrically arranged with respect to to the pill or can be arranged asymmetrically. Preferably, the mold is pre-formed, for example, being created using a specially designed tablet press where the surface of the punch that comes into contact with the detergent composition is designed so that when it enters contact and press the detergent composition press a mold, or Multiple molds in the detergent tablet. Preferably, the mold will have a concave surface inside or generally concave to provide better accommodation and a physical deposit for the compartment that contains the liquid, gel or paste. So alternatively, the mold can be created by compression of a body preformed detergent composition arranged around a central matrix, thus forming a molded body having a mold in the form of a cavity that extends axially between the opposite surfaces of the body. Pills with molds result very useful from the point of view of the accommodation of compartment comprising the anhydrous detergent auxiliary substance liquid, gel or paste for dishwashing of the present invention.

In the present invention, the auxiliary substance detergent comprises the humectant in sufficient levels to act as a moisture collector to stabilize the active substance moisture sensitive detergent. It is considered that a substance Active detergent is sensitive to moisture when it can interact with moisture to reduce its detergency activity as, by example, detergent bleach. Bleachers in the form of particles suitable for use in the present invention include inorganic peroxides including perborate and percarbonates, peracids organic, including monoperoxy carboxylic acids formed previously, such as peroxy hexanoic phthaloylamido acid and diacil peroxides. Preferred peroxides for use herein invention are percarbonate and perborate bleach.

The humectant is a substance that can capture or emit moisture to your environment based on relative humidity surrounding. The humectants used in the present invention are capable of acting as moisture collectors of the dust layer. This stabilizes the active substance sensitive detergent to the humidity. The humectants should have an equilibrium point of the humidity such that it allows them to act as a moisture collector, but preferably they should absorb less than about 10%, more preferably less than about 5% and even more preferably less than about 1%, water at a humidity relative of 75% or less, and more preferably at a humidity relative of 90% or less, under conditions of temperature and pressure environmental (20ºC and 101 kPa [1 atmosphere]). Use moisturizers in the present invention they are selected from organic solvents non-aqueous hydrophiles including glycols and polyhydric alcohols, for example, sorbitol, glycerol, dipropylene glycol and mixtures of the same, and also various hygroscopic solids including salts inorganic or organic such as silicates, phosphates and citrates, as well as sugars, etc. Of preferred use in the present invention are the humectants and mixtures of humectants that comprise glycols, more preferably polyethylene glycols and especially mixtures of polyethylene glycols of different molecular weight. By example, mixtures of polyethylene glycol having a molecular weight of about 200 to about 1,200, more preferably of about 200 to about 800, and polyethylene glycol that it has a molecular weight of about 2,000 to about 6,000, more preferably from about 2,600 to approximately 4,000. In the polyethylene glycol mixtures used In the present invention, low weight polyethylene glycols molecular and high molecular weight are normally in a relationship weighing at least 10: 1 and preferably at least 100: 1.

In a preferred embodiment, the composition Anhydrous detergent auxiliary comprises a detergency enzyme. The enzyme is preferably in liquid form and is administered to the washing solution basically before products in the form of particles, which reduces or prevents interaction with substances active, such as bleach, which can have a deleterious effect on the stability and capacity of the enzyme in the solution of washed.

In preferred embodiments the composition for dishwashing comprises an organic solvent system. The organic solvent system can simply act as a liquid carrier, but in preferred compositions, the solvent can help remove dirt after cooking, baking or burning and, Therefore, the detergent has functionality by itself. He organic solvent system (comprising a solvent compound single or a mixture of solvent compounds) preferably has a volatile organic compound content exceeding 0.1 kPa (1 mm Hg) and more preferably greater than 0.01 kPa (0.1 mm Hg) of less than about 50%, preferably less than about 20% and more preferably less than about 10%, by weight of the solvent system. In this report the volatile organic compound content of the solvent system is defined as the content of organic components in the system solvent that has a vapor pressure greater than the limit prescribed at 25 ° C and atmospheric pressure.

The organic solvent system used in the The present invention is preferably selected from solvents of organoamine type, including alkanolamines, alkylamines, alkylenamines and mixtures thereof; alcohol solvents including aromatic, aliphatic alcohols (preferably C 4 -C 10) and cycloaliphatics and mixtures of themselves; glycols and glycol derivatives included C 2 -C 3 (poly) alkylene glycols, glycol ethers, glycol esters and mixtures thereof and mixtures selected from organoamine type solvents, solvents alcoholics, glycols and derivatives of glycols. In one embodiment preferred the organic solvent comprises solvent of type organoamine (especially alkanolamine) and ether solvent of glycol, preferably in a weight ratio of about 3: 1 to about 1: 3 and in which the ether solvent of glycol is selected from ethylene glycol monobutyl ether, ether diethylene glycol monobutyl, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, monobutyl ether of propylene glycol and mixtures thereof. Preferably, the ether of glycol is a mixture of diethylene glycol monobutyl ether and propylene glycol butyl ether, especially in a weight ratio of about 1: 2 to about 2: 1.

According to another embodiment of the invention the auxiliary dishwashing composition can take the form of a paste that has a density greater than about 1,100 kg / m 3, preferably greater than about 1,300 kg / m 3.

The multi-compartment bags suitable for their use in the present invention may include compartments with different solubility profiles controlled by, by example, pH, temperature or other means. Water-soluble bags a high temperature allow the handling of the bags at room temperature with wet hands.

Multicompartmental exchanges in the present invention comprise at least one compartment containing a powder composition or densified powder and at least one compartment It contains an anhydrous liquid, gel or paste. This composition in powder comprises traditional solid materials that are used in dishwashing detergents, such as reinforcing additives of detergency, alkalinity sources, in addition to substances active moisture sensitive detergents such as bleach, etc. Liquid, gel or paste compositions comprise traditional liquid materials used in detergents for dishwashing, such as non-ionic surfactants or organic solvents described above herein memory, in addition to a humectant. The compartment comprising the detergent auxiliary substance is placed on the compartment comprising the detergent bleach in order to protect the active substance moisture sensitive detergent and reduce the surface of the compartment containing the bag that is exposed to moisture

Detailed description of the invention

The present invention contemplates the use of detergent and auxiliary compositions for dishwashing in a multicompartmental bag, in which an active substance Moisture sensitive detergent and a humectant are contained in separate compartments The humectant is able to act as moisture collector and serves to stabilize the active substance moisture sensitive detergent.

Especially useful unit dosage forms of use in the present invention are the bags. The bag in the present invention is typically a closed structure comprising two or more compartments made of materials described herein. Subject to the limitations of adaptation to the dispenser, the bag may be of any shape, configuration and material that is suitable for containing the composition, e.g. eg, without allowing the composition of the bag to be released before the bag comes into contact with water. The exact embodiment will depend, for example, on the type and quantity of the composition in the bag, on the number of compartments in the bag, on the characteristics required to contain, protect and supply or release the composition and / or components of the bag.
same.

The composition, or components thereof, are contained in the space in internal volume and are typically separated from the outside environment by a material barrier water soluble. Typically, different components of the composition contained in different compartments of the bag are separated from each other by a material barrier water soluble.

In the case of multi-compartment exchanges, the compartments can be of different colors, for example, a first compartment can be green or blue and a second Compartment can be white or yellow. A compartment of the bag can be opaque or semi-opaque and a second compartment of the Bag can be translucent, transparent or semi-transparent. The Bag compartments can be the same size, have the same internal volume or can have different sizes with Different internal volumes.

For reasons of deformability and adaptation to dispenser under compression forces, bags or bag compartments that contain a component that is liquid will usually contain an air bubble with a volume up to about 50%, preferably up to about 40%, more preferably up to about 30%, more preferably up to about 20%, more preferably up to about 10% of the volume space of said compartment.

The bag is made of a material in the form of bag that is water soluble and preferably has a water solubility of at least 50%, preferably at least 75% or even at least 95%, measured by the method exposed to then used a glass filter with a pore size maximum of 20 micrometers

50 grams ± 0.1 gram of material are added bag-shaped to a heavy 400 ml beaker previously and 245 ml ± 1 ml of distilled water at the temperature appropriate. This is vigorously stirred on a heated plate with a magnetic stirrer set at 62.8 rad / s (600 rpm), for 30 minutes Then the mixture is filtered through a filter Qualitatively folded sintered glass with a pore size as defined above (max. 20 micrometers). The water is removed from the filtrate collected by any conventional method and the weight of the remaining material is determined (which is the fraction dissolved or dispersed). Then you can calculate the% of solubility or dispersibility at the specified temperature.

Preferred bag-shaped materials are polymeric materials, preferably polymers that conform In a movie or sheet. The bag-shaped material can obtained, for example, by casting, blow molding, extrusion or blow extrusion of the polymeric material, such as It is known in the art.

The polymers, copolymers or derivatives of the same preferred suitable for use as material in the form of Bag are selected from poly (vinyl alcohols), partially hydrolyzed poly (vinyl acetates), polyvinylpyrrolidone, poly (alkylene oxides), acrylamide, acid Acrylic, cellulose, cellulose ethers, cellulose esters, amides cellulose, poly (vinyl acetates), acids polycarboxylic and salts, polyamino acids or peptides, polyamides, polyacrylamide, maleic acid / acrylic acid copolymers, polysaccharides that include starch and gelatin, such natural gums such as xanthan gum and carrageenan gum. The most preferred polymers are selected from acrylate polyacrylates and copolymers Water soluble, methyl cellulose, sodium carboxymethyl cellulose, dextrin, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxybutyl methyl cellulose, maltodextrin, polymethacrylates, and more preferably it selected from polyvinyl alcohols, copolymers of polyvinyl alcohol, polyvinyl acetates partially hydrolyzed and hydroxypropyl methyl cellulose (HPMC), hydroxybutyl methyl cellulose (HBMC), and mixtures thereof. Preferably, the level of polymer in the bag-shaped material, for example, a PVA polymer, is of at least 60%

The polymer can have any molecular weight weight average, preferably about 1,000 to 1,000,000, more preferably from about 10,000 to 300,000 e even more preferably from about 20,000 to 150,000.

Mixtures of polymers such as bag-shaped material. This can be beneficial for control the mechanical and / or dissolution properties of compartments or bag, depending on the application of the same and of the required needs. Suitable blends include by example mixtures in which a polymer has a water solubility greater than another polymer and / or a polymer has a resistance mechanical greater than that of another polymer. Also suitable are polymer blends that have different molecular weights weight average, for example, a mixture of PVA or a copolymer of the same with a weight average molecular weight of approximately 10,000-40,000, preferably approximately 20,000 and of PVA or copolymer thereof, with a molecular weight weight average of preferably 100,000 to 300,000, preferably about 150,000.

They are also suitable herein. polymer blend compositions, for example, comprising mixtures of hydrolytically degradable and water soluble polymers, as polylactide and polyvinyl alcohol, obtained by mixing polylactide and polyvinyl alcohol, typically comprising approximately 1-35% by weight of polylactide and approximately 65% to 99% by weight of polyvinyl alcohol.

Of preferred use in the present invention are polymers including polyvinyl acetate that are of about 60% to about 98% hydrolyzed, preferably from about 80% to about 90% hydrolysed, to improve the dissolution characteristics of the material.

The most preferred bag-shaped materials are known PVA films with the Monosol brand reference M8630, sold by Chris-Craft Industrial Products of Gary, Indiana, USA and PVA films with the corresponding solubility and deformability characteristics. Other movies suitable for use in the present invention include films known with the commercial reference PT film or the K series of the films supplied by Aicello or the film VF-HP supplied by Kuraray.

The bag-shaped material of this The invention may also comprise one or more additive ingredients. For example, it may be beneficial to add plasticizers, for example, glycerol, ethylene glycol, diethylene glycol, propylene glycol, sorbitol and mixtures thereof. Other additives include additives functional detergents that are released into the wash water, by example, organic polymer dispersants, etc.

The bag can be prepared according to the methods known in the art. The bag is typically prepared by first cutting a piece of bag-shaped material from the suitable size, preferably the bag-shaped material. He bag-shaped material is then folded to form the number and size of compartments needed and the edges are sealed using any suitable technology, for example, heat sealing, wet sealed or pressure sealed. Preferably, it is put in Contact a sealing source with the bag-shaped material, it heat or pressure is applied and the bag-shaped material is sealed.

The bag-shaped material is introduced from typical form in a mold and vacuum is applied so that the material Bag-shaped sticks to the inside surface of the mold, thus forming an indentation or niche by vacuum in said material in the form of a bag. This is known as vacuum forming.

Another suitable method is thermoforming. He thermoforming typically involves the forming stage of an open bag in a mold by heat application, which allows the bag-shaped material to take the form of the mold.

Typically, more than one piece of bag-shaped material to make the bags multi-compartment For example, a first piece of material in Bag shape can be retracted by vacuum in the mold, so that said bag-shaped material sticks to the inner walls of the mold. Then you can place a second piece of bag-shaped material, so that it overlaps at least partially, with the first piece of the bag-shaped material. He first piece of bag-shaped material and the second piece of Bag-shaped material seal each other. The first piece of bag-shaped material and the second piece of material in the form bag can be made of the same type of material or can Be made of different types of material.

In a preferred process, a piece of material in Bag shape is folded at least twice, or used at least three pieces of bag-shaped material, or at least used two pieces of bag-shaped material where at least one piece of bag-shaped material is folded at least once. The third piece of bag-shaped material, or a piece of material in the form of a bag folded bag, creates a barrier layer that, when sealed bag, divide the internal volume of said bag into at least two or more compartments.

The bag can also be prepared by adjusting a first piece of bag-shaped material in a mold, by For example, the first piece of film can be retracted by vacuum in the mold so that said film sticks to the inner walls of the mold. A composition, or component thereof, is poured from typical shape in the mold. A previously made sealed compartment of bag-shaped material, then placed in a shape typical on the mold containing the composition, or component of the same. The previously sealed compartment contains preferably a composition, or component thereof. He pre-sealed compartment and said first piece of shaped material Bag can be sealed together to form the bag.

The detergent auxiliary substance can understand traditional detergency components and also may comprise organic solvents that have a function cleaner and organic solvents that have a function of vehicle or diluent or other specialized function. The compositions one or more components will generally be manufactured and contain detergent assets which can be selected from dyes, bleaching agents, surfactants, alkalinity sources, enzymes, thickeners (in the case of liquid compositions, in paste form or gel form), anti-corrosion agents (e.g., sodium silicate) and disintegrating agents and binders (in the case of powder, granules or pills). Auxiliary components Very preferred detergents include a reinforcing additive compound of detergency, a source of alkalinity, a surfactant, a enzyme and a bleaching agent.

Unless otherwise indicated, the Components described below herein are may incorporate into the dishwasher product or substance auxiliary detergent

Organic solvents should be selected so that they were compatible with tableware / household items kitchen, as well as with the different parts of a dishwasher. In addition, the solvent system should be effective and safe to use and have a volatile organic content of more than 0.1 kPa (1 mm Hg) (and preferably more than 0.01 kPa [0.1 mm Hg]) of less than about 50%, preferably less than about 30% and more preferably less than about 10%, by weight of solvent system Also, it should also have a smell nice very slight. Individual organic solvents used in the present invention generally have a point of boiling above about 150 ° C, a flash point greater than about 100 ° C and a vapor pressure less than approximately 0.1 kPa (1 mm Hg), preferably less than 0.01 kPa (0.1 mm Hg), at 25 ° C and atmospheric pressure.

The solvents that can be used in the Present invention include: i) alcohols, such as alcohol benzyl, 1,4-cyclohexane dimetanol, 2-ethyl-1-hexanol, furfuryl alcohol, 1,2-hexanediol and others similar materials; ii) amines, such as alkanolamines (e.g., primary alkanolamines: monoethanolamine, monoisopropanolamine, diethylene ethanolamine, ethyl diethanolamine; secondary alkanolamines: diethanolamine, diisopropanolamine, 2- (methylamino) ethanol; tertiary alkanolamines: triethanolamine, triisopropanolamine); alkylamines (eg primary alkylamines: monomethylamine, monoethylamine, monopropylamine, monobutylamine, monopentylamine, cyclohexylamine), secondary alkylamines: (dimethylamine), alkyleneamines (primary alkyleneamines: ethylenediamine, propylenediamine) and other similar materials; iii) esters, such as ethyl lactate, methyl ester, ethyl acetoacetate, ether ethylene glycol monobutyl acetate ether, monoethyl ether of diethylene glycol acetate, diethylene glycol acetate monobutyl ether and other similar materials; iv) glycol ethers, such as ether ethylene glycol monobutyl ether, monobutyl ether of diethylene glycol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, monoethyl ether of diethylene glycol, propylene glycol butyl ether and other materials Similar; v) glycols, such as propylene glycol, diethylene glycol, hexylene glycol (2-methyl-2,4 pentanediol), triethylene glycol, composition and dipropylene glycol and other similar materials and mixtures thereof.

Surfactant

In the methods of the present invention, the detergent surfactant is preferably low foaming by itself same or together with other components (i.e. suppressors of suds). Suitable surfactants in the present invention include anionic surfactants such as alkyl sulfates, alkyl ether sulfates, alkylbenzene sulphonates, alkyl glyceryl sulfonates, alkylsulfonates and alkenylsulfonates, alkylethoxy carboxylates, N-acylsarcosinates, N-acyl restaurants and alkylsuccinates and sulphosuccinates, wherein the alkyl, alkenyl or acyl moiety is C 5 -C 20, preferably C 10 -C 18 linear or branched; surfactants cationic such as chlorine esters (US-A-4228042, US-A-4239660 and US-A-4260529) and surfactants mono type N-alkyl or alkenyl C_ {6} -C_ {16} ammonium, where the N positions remaining are substituted with methyl, hydroxyethyl or hydroxypropyl; nonionic surfactants of low and high cloud point and mixtures thereof including nonionic alkoxylated surfactants (especially ethoxylated derivatives of primary C 6 -C 18 alcohols), ethoxylated-propoxylated alcohols (e.g., Poly-Tergent® SLF18 from Olin Corporation), alcohols poly (oxyalkylated) terminally protected with epoxy (e.g. eg, Poly-Tergent® SLF18B from Olin Corporation [see WO-A-94/22800]), surfactants of poly (oxyalkylated) alcohol type terminally protected with ether and polymeric block compounds polyoxyethylene-polyoxypropylene, such as PLURONIC®, REVERSED PLURONIC® and TETRONIC® of BASF-Wyandotte Corp., Wyandotte, Michigan; amphoteric surfactants such as alkyl oxides C 12 -C 20 amine (preferred amine oxides of use in the present invention include lauryl dimethyl oxide amine and hexadecyl dimethyl amine oxide) and type surfactants amphocarboxylic alkyl, such as Miranol ™ C2M; and surfactants of hybrid ion, such as betaines and sultaines; and mixtures of same. Suitable surfactants herein are described, for example, in patents US-A-3,929,678, US-A-4,259,217, EP-A-0414 549, the document WO-A-93/08876 and the document WO-A-93/08874. Surfactants are typically present at a level of approximately 0.2% at about 30% by weight, more preferably about 0.5% to about 10% by weight, most preferably about 1% to about 5% by weight of the composition. Surfactants of preferred use in the present invention are low foaming surfactants and include nonionic surfactants of low cloud point and very active surfactant mixtures foaming point non-ionic surfactant foaming agents under that act as a suppressant of the soaps for it.

Detergency builder

Suitable detergency builders for use in the detergent and cleaning compositions herein invention include detergency builder additives water soluble, such as citrates, carbonates and polyphosphates, e.g. ex. sodium tripolyphosphate and sodium tripolyphosphate hexahydrate, potassium tripolyphosphate and mixture of sodium tripolyphosphate salts and potassium and detergency builder additives partially water soluble or insoluble, such as layered silicates (EP-A-0164514 and EP-A-0293640) and aluminosilicates including zeolites A, B, P, X, HS and MAP. The reinforcing additive of the detergency is typically present at a level of about 1% to about 80% by weight, preferably of approximately 10% to approximately 70% by weight, with maximum preference of about 20% to about 60% by weight of the composition.

They can also be used in the present invention. amorphous sodium silicates that have a relationship SiO2: Na2O from 1.8 to 3.0, preferably from 1.8 to 2.4 and with maximum preference 2.0, although from the point of view of stability during prolonged storage are very preferred compositions containing less than about 22%, preferably less than about 15%, of total silicate (amorphous and crystalline).

Enzyme

Suitable enzymes in the present invention include bacterial and fungal cellulases such as Carezyme and Celluzyme (Novo Nordisk A / S); peroxidases; lipases such as Amano-P (Amano Pharmaceutical Co.), M1 Lipase® and Lipomax® (Gist-Brocades) and Lipolase® and Lipolase Ultra® (Novo); cutinases; proteases such as Esperase®, Alca-
lase®, Durazym® and Savinase® (Novo) and Maxatase®, Maxacal®, Properase® and Maxapem® (Gist-Brocades); and? -amylases and? -amylases such as Purafect Ox Am® (Genencor) and Termamyl®, Ban®, Fungamyl®, Duramyl® and Natalase® (Novo); and mixtures thereof. The enzymes are preferably added in the present invention in the form of pellets, granules or cogranulates at levels typically in the range of about 0.0001% to about 2% pure enzyme by weight of the composition.

Bleaching agent

Suitable bleaching agents in the This report includes chlorinated bleaches and bleaches oxygen releasers, especially perhydrated salts inorganic, such as sodium perborate monohydrate and tetrahydrate and sodium percarbonate optionally coated to provide a controlled release rate (see, for example, sulfate / carbonate coatings in the application GB-A-1466799), peroxyacids preformed organic and mixtures thereof with precursors of organic peroxyacid bleach and / or bleaching catalysts that They contain transition metals (especially manganese or cobalt). Inorganic perhydrated salts are typically incorporated into levels in the range of about 1% to about 40% by weight, preferably from about 2% to about 30% by weight and more preferably about 5% at approximately 25% by weight of the composition. The precursors of Preferred peroxyacid bleach for use in the present invention include perbenzoic acid and perbenzoic acid precursors replaced; cationic peroxyacid precursors; precursors of peracetic acid, such as TAED, sodium acetoxybenzene sulfonate and pentaacetylglucose; pernonanoic acid precursors, such as Sodium 3,5,5-trimethylhexanoyloxybenzene sulfonate (iso-NOBS) and sodium nonanoyloxybenzene sulfonate (NOBS); amide substituted alkyl peroxyacid precursors (EP-A-0170386) and precursors of benzoxazine peroxyacid (EP-A-0332294 and EP-A-0482807). The precursors of bleach are typically incorporated at levels in the range from about 0.5% to about 25%, preferably from about 1% to about 10% by weight of composition, while the preformed organic peroxyacids themselves are typically incorporate levels in the range of 0.5% to 25% by weight, more preferably from 1% to 10% by weight of the composition. Preferred bleaching catalysts for use herein invention include manganese triazacyclononane and complexes related (US-A-4246612, US-A-5227084); bispyridylamine from Co, Cu, Mn and Fe and related complexes (US-A-5114611) and pentamine cobalt (III) acetate and related complexes (US-A-4810410).

Nonionic surfactants of low cloud point and soaps suppressants

The suds suppressors suitable for their use in the present invention include nonionic surfactants They have a low cloud point. The expression "point of cloudiness ", herein, is a property well known of the nonionic surfactants by which the surfactant it becomes less soluble as the temperature rises, receiving the temperature at which the appearance of a second phase the name of "cloud point" (see Kirk Othmer, p. 360-362). In this report, a "low cloud point" non-ionic surfactant is defined as an ingredient of a non-ionic surfactant system that it has a cloud point of less than 30 ° C, preferably less than about 20 ° C and even more preferably less than approximately 10 ° C and most preferably less than approximately 7.5 ° C. Non-ionic surfactants Typical low cloudiness include non-alkoxylated surfactants. ionic, especially ethoxylates derived from primary alcohols and reverse block polymers polyoxypropylene / polyoxyethylene / polyoxypropylene (PO / EO / PO). Also, these low-ion non-ionic surfactants of cloudiness include, for example, alcohol ethoxylated-propoxylated (e.g., Poly-Tergent® SLF18 from Olin Corporation) and alcohols poly (oxyalkylated) terminally protected with epoxy groups (e.g., the Poly-Tergent® SLF18B series of non-ionic surfactants of Olin Corporation, as described, by example, in US-A-5,576,281).

Cloud point surfactants Low preferred are the suds suppressors polyoxyalkylated terminal protected with ether groups that They have the formula:

\delm{C}{\delm{\para}{\delm{R ^{2} }{}}}

H --- O)_{x} --- (CH_{2} --- CH_{2} --- O)_{y} --- (CH_{2} ---

\delm{C}{\delm{\para}{\delm{R ^{3} }{}}}

H --- O)_{z} --- HR 1 O --- (CH 2 ---

 \ delm {C} {\ delm {\ para} {\ delm {R2} {}}} 

H --- O) x --- (CH_2 --- CH_2 --- O) y --- (CH_2 ---

 \ delm {C} {\ delm {\ para} {\ delm {R3} {}}} 

H --- O) z --- H

where R 1 is a linear alkyl hydrocarbon having an average of approximately 7 to about 12 carbon atoms, R2 is a hydrocarbon linear alkyl of about 1 to about 4 atoms of carbon, R 3 is a linear alkyl hydrocarbon of about 1 to about 4 carbon atoms, x is a integer from about 1 to about 6, and is a integer from about 4 to about 15 and z is a integer from about 4 to about 25.

Other non-ionic surfactants Low cloudiness are polyoxyalkylated surfactants terminal protected with ether groups that have the formula:

R I O (R II O) n CH (CH 3) OR III

where R_ {I} is selected from group consisting of aliphatic hydrocarbon radicals or aromatic, substituted or unsubstituted, saturated or unsaturated, linear or branched that are approximately 7 to about 12 carbon atoms; R_ {II} can be the same or different and are selected, independently of each other, from the group consisting of C2 to C7 alkylene branched or linear in any given molecule; n is a number from 1 to about 30 and R_ {III} is selected from the group consisting in:

(i)

 a substituted or unsubstituted heterocyclic ring of 4 to 8 elements containing 1 to 3 heteroatoms; Y

(ii)

aliphatic hydrocarbon radicals or aromatic, cyclic or acyclic, substituted or unsubstituted, saturated or unsaturated, linear or branched that have about 1 to about 30 carbon atoms;

(b)

 with the condition that when R2 is (ii) then: (A) at least one of R 1 is different from C 2 to C 3 alkylene or (B) R2 has 6 to 30 carbon atoms; and with the condition additional that when R2 has 8 to 18 carbon atoms, R it is different from C 1 to C 5 alkyl.

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Other suitable components herein invention include organic polymers having properties dispersants, anti-redeposition, dirt release or other detergency properties at levels of approximately 0.1% at about 30%, preferably about 0.5% at about 15% and most preferably about 1% at approximately 10%, by weight of the composition. Polymers Preferred anti-redeposition in the present invention include the polymers containing acrylic acid, such as Sokalan PA30, PA20, PA15, PA10 and Sokalan CP10 (BASF GmbH), Acusol 45N, 480N, 460N (Rohm and Haas), acrylic acid / maleic acid copolymers, such such as Sokalan CP5, and acrylic / methacrylic copolymers. The preferred soil release polymers in the Present invention include alkyl celluloses and hydroxyalkyl celluloses (US-A-4,000,093), polyoxyethylene, polyoxypropylenes and copolymers thereof, and polymers not ionic and anionic based on terephthalate esters of ethylene glycol, propylene glycol and mixtures thereof.

Heavy metal sequestrants and crystal growth inhibitors are suitable for use in the present invention at levels generally of about 0.005% to about 20%, preferably about 0.1% to about 10%, more preferably about 0.25% to approximately 7.5% and most preferably about 0.5% to about 5%, by weight of the composition, for example, diethylenetriamine penta (methylene phosphonate), ethylenediamine tetra (methylene phosphonate) hexamethylenediamine tetra (methylene phosphonate), ethylenediphosphonate, hydroxy-ethylene-1,1-diphosphonate, nitrilotriacetate, ethylenediaminetetracetate, ethylenediamino-N, N'-disuccinate in its salt and free acid forms.

The compositions of the present invention may contain a corrosion inhibitor, such as agents of organic silver coating at levels of approximately 0.05% to about 10%, preferably about 0.1% at about 5%, by weight of the composition (especially paraffins, such as Winog 70 marketed by Wintershall, Salzbergen, Germany), corrosion inhibitor compounds that contain nitrogen (for example, benzotriazole and benzimadazole [see GB-A-1137741]) and compounds of Mn (II), especially Mn (II) salts of ligands organic at levels of about 0.005% to about 5%, preferably from about 0.01% to about 1%, more preferably from about 0.02% to about 0.4%, in composition weight.

Other suitable components herein invention include colorants, water soluble bismuth compounds, such as bismuth acetate and bismuth citrate at levels of about 0.01% to about 5%, stabilizers enzymatic, such as calcium ion, boric acid, propylene glycol and chlorine bleaching agent eliminating agents at levels of about 0.01% to about 6%, soap dispersants limestone (see request WO-A-93/08877), suppressors of soaps (see applications WO-93/08876 and EP-A-0705324), inhibiting agents of the transfer of polymeric dyes, brighteners optics, perfumes, fillers and clay.

The liquid detergent compositions of the The present invention may contain small amounts of alcohols. primary or secondary low molecular weight, such as methanol, ethanol, propanol and isopropanol. Other solvent vehicles Suitable used in small amounts include glycerol, propylene glycol, ethylene glycol, 1,2-propanediol, sorbitol and mixtures thereof.

Examples Abbreviations used in the Examples

In the examples, the identifications of the Abbreviated component have the following meanings:

Carbonate

: Anhydrous sodium carbonate

STPP (anhydrous)

: Anhydrous sodium tripolyphosphate

STPP (hydrated)

: Hydrated sodium tripolyphosphate up to about 8%

Silicate

: Amorphous sodium silicate (SiO2: Na2O = de 2: 1 to 4: 1)

HEDP

: Acid ethane-1-hydroxy-1,1-diphosphonic

Perborate

: Sodium perborate monohydrate

Percarbonate

: Sodium percarbonate of nominal formula 2Na2CO3 .3H2O2

Termamyl

: marketed α-amylase by Novo Nordisk A / S

Savinase

: Protease marketed by Novo Nordisk ACE

FN3

: Protease marketed by Genencor

SLF18

: Low foaming surfactant marketed by Olin Corporation

ACNI

: Terminalically protected non-ionic surfactant with alkyl of formula C 9/11 H_ {19/23} EO_ {8} - {} \ hskip0.1cm cyclohexyl acetal

C_ {14} AO

: Tetradecyl dimethylamine oxide

C_ {16} AO

: Hexadecyl dimethylamine oxide

Duramyl

: marketed α-amylase by Novo Nordisk A / S

DPG

: dipropylene glycol

In the following examples all levels are Express as parts by weight.

Examples 1 to 4

The compositions of examples 1 to 4 are made in the form of a two compartment PVA bag. The bag with two compartments is made of a Monosol M8630 film supplied by Chris-Craft Industrial Products. The bags are made by pre-sealing the composition liquid using the technique described below herein memory. The composition is placed in the form of particles and the anhydrous composition in two horizontal laminated compartments different, placing the anhydrous composition above the composition in the form of particles. The illustrated bags present good product stability in the form of particles for dishwasher.

one

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Examples 5 a 8

The particulate compositions of the Examples 1 to 4 are made up of tablets. The pills are Prepare as follows. The detergent composition is prepared mixing the granulated and liquid components and then passed to the matrix of a conventional rotary press. The press includes a punch with the appropriate form for the formation of a mold in the upper surface of the tablet. The cross section of the Matrix is approximately 30x38 mm. The composition is subjected to then at a compression force of 92.2 MPa (940 kg / cm2), the punch is raised and a tablet comprising a mold is ejected from the tablet press.

PVA bags are shaped and filled by separated with the anhydrous auxiliary compositions of examples 1 to 4.

Multi-compartment bags are manufactured placing a PVA film on a tray that has a series of pill-shaped depressions The tray is filled with pills, placing the pills in the tray so that the molds of the pills are facing up. A layer of bags comprising the anhydrous composition with the bags on top and adjacent to the molds of the pads and used to close, by solvent sealing, the layer of open bags that Understand the pills.

Film was used to make the bags Monosol M8630 supplied by Chris-Craft Industrial Products

The illustrated bags have a good product stability in the form of particles for dishwasher.

Claims (11)

1. A method of washing dishes / articles table in a dishwasher, the release method comprising simultaneous or sequential quantities of a product to dishwasher in the form of particles or in the form of particles densified and an anhydrous detergent auxiliary substance for the dishwashing in the form of liquid, gel or paste, contained in separate compartments of a multi-compartment bag water soluble in the same or in different cycles of the dishwasher, in where the particulate dishwasher product comprises a detergent bleach and detergent auxiliary substance comprises a humectant at levels sufficient to act as moisture collector to stabilize the detergent active substance moisture sensitive, where the humectant is selected from non-aqueous hydrophilic organic solvents, including glycols and polyhydric alcohols, and where the compartment comprising the detergent auxiliary substance is located above the compartment comprising the detergent bleach. 2. A method according to claim 1, in the that the product in the form of particles for dishwashing is densifies by tapping, compression, force application of inertia or compaction. 3. A method according to claim 1 or 2, in the product in the form of particles for dishwashing It is in the form of a pill. 4. A method according to any of the previous claims, wherein the auxiliary substance Anhydrous detergent comprises a detergency enzyme. 5. A method according to the claims above, in which the anhydrous detergent auxiliary substance comprises an organic solvent system effective for removal of dirt from cooked, baked and burned food. 6. A method according to claim 5, in the that the organic solvent system is selected from alcohols, amines, esters, glycol ethers, glycols, terpenes and mixtures of the same. 7. A method according to claims 5 or 6, wherein the organic solvent system is selected from Organoamine type solvents, including alkanolamines, alkylamines, alkylenamines and mixtures thereof; solvents alcoholics, including aromatic, aliphatic alcohols (preferably C 4 -C 10) and cycloaliphatic and mixtures thereof; glycols and glycol derivatives including C 2 -C 3 (poly) alkylene glycols, glycol ethers, glycol esters and mixtures thereof, and selected mixtures of organoamine type solvents, alcoholic solvents, glycols and derivatives of glycols. 8. A method according to any of the claims 5 to 7, wherein the organic solvent comprises organoamine type solvent (especially alkanolamine) and glycol ether type solvent, preferably in a ratio of weight from about 3: 1 to about 1: 3, and where the glycol ether type solvent is selected from monobutyl ether deethylene glycol, diethylene glycol monobutyl ether, ether ethylene glycol monomethyl, ethylene glycol monoethyl ether, ether diethylene glycol monomethyl, diethylene glycol monoethyl ether, propylene glycol monobutyl ether, monobutyl ether of dipropylene glycol, ethylene glycol phenyl ether and mixtures of same. 9. A method according to any of the previous claims, wherein the auxiliary substance detergent is in the form of a paste that has a density of more than about 1,100 kg / m 3, preferably more than approximately 1,300 kg / m 3. 10. A method according to any of the previous claims, wherein the compartments of the Multi-compartment bag have different speeds of Water solubility under given temperature conditions. 11. A method according to any of the previous claims, wherein the auxiliary composition Anhydrous detergent comprises a non-ionic surfactant.